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Microstructural characterization of laser sintered synthetic calcium phosphate-natural dentine interface for the restoration of enamel surface

1 The Institute for Materials Research, Houldsworth Building, University of Leeds Leeds LS2 9JT, UK;
2 Leeds Dental School, Worsley Building, University of Leeds, Leeds LS2 9JT;
3 School of Physics and Astronomy, University of St Andrews, St Andrews KY16 9SS, UK

Tooth sensitivity is a common occurrence and it is caused by acid induced erosion of enamel surface. In this investigation we report the results of calcium phosphate based minerals which are irradiated with lasers ex vivo for the analysis of photo activated densification of minerals. The photo-activation in these minerals may primarily arise from the absorption centres, namely OH- and rare-earth (RE)3+ ion dopants (e.g. Er3+ ions) incorporated during synthesis. The loss of hydroxyl group from mineral is characterized using the thermogravimetric technique. The microstructural changes under the conditions of continuous wave (CW) and pulsed laser irradiation are reported together with the measured temperature rise. The preliminary data on surface hardness of occluded dentine with photo-activated calcium phosphate minerals are also reported, for aiming an eventual hardness value of 3300 MPa which is known for natural enamels.
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1. Bender IB (2000) Pulpal Pain Diagnosis-A Review. J Endod 26: 1-5.    

2. Addy M (2002) Dentin hypersensitivity: new perspectives on an old problem Int Dent J 52:367-375.

3. Walters PA (2005) Dentinal hypersensitivity: A Review. J Contemp Dent Pract 6(2): 107-117.

4. Schafer F, Beasley T, Abraham P (2009) In vivo delivery of fluoride and calcium from toothpaste containing 2% hydroxyapatite. International Dental J 59(6): 321-324.

5. Aranha AC, Pimenta LA, Marchi GM (2009) Clinical evaluation of desensitizing treatments for cervical dentin hypersensitivity. Braz Oral Res 23 (3): 333-339.

6. Earl JS, Milne SJ, Wood D (2008) In Vitro Study of dentin tubule infiltration by hydroxyapatite and Silica Nanoparticles. 1-16.

7. Roveri N, Battistella E, Bianchi CL, et al. (2009) Surface Enamel Remineralization: Biomimetic Apatite Nanocrystals and Fluoride Ions Different Effects. J Nanomaterials 1-9.

8. Bigi A, Boanini E, Capuccini C, et al. (2007) Strontium-substituted hydroxyapatite nanocrystals. Inorg Chim Acta 360 (3): 1009-1016.

9. Matthew M, Takagi S (2001) Structures of Biological Minerals in Dental Research. J Res Natl Inst Stand Technol 106 (6): 1035-1044.

10. Byrappa K, Yoshimura M (2001) Handbook of hydrothermal technology 7-14, 287-295.

11. Resende NS, Nele M, Salim VMM (2006) Effects of anion substitution on the acid properties of hydroxyapatite. Thermochim Acta 451(1-2): 16-21.

12. Mayer I, Layani JD, Givan A, et al. (1999) La ions in precipitated hydroxyapatites. J Inorg Biochem 73(22): 1-6.

13. Boanini E, Gazzano M, Bigi A (2011) Ionic substitutions in calcium phosphates synthesized at low temperature. Acta Biomaterialia 6: 1882-1894.

14. Bartl MH, Scott H, Wirnsberger G, et al. (2002) Synthesis and luminescence properties of mesostructured thin films activated by in-situ formed trivalent rare earth ion complexes. Chem Commun 21: 2474-2475.

15. Zhang C, Matsumoto K, Kimura Y, et al. (2006) Effects of CO2 laser in treatment of cervical dentinal hypersensitivity. 24 (9): 595-597.

16. Husein (2006) An Applications of Lasers in Dentistry: A Review. Arch Orofac Sci 1: 1-4.

17. Elmadani E, Jha A, Peralli T, et al. (2012) Characterization of Rare-Earth Oxide Photoactivated Calcium Phosphate Minerals for Resurfacing Teeth. J Am Ceram Soc 1-7.

18. Shellis RP, Heywood BR, Wahab FK (1997) Formation of Brushite, Monetite and Whitelocktite During Euilibration of Human Enamel with Acid Solutions at 37℃. Caries Res31:71-77.

19. Fernandez TT (2010) Femtosecond laser written optical waveguide amplifier in phosphotellurite glass. Optics Express 18(19): 20289-20297.

20. Jha A, Richards B, Jose G, et al. (2012) Rare-earth ion doped TeO2 and GeO2 glasses as laser materials. Prog Mater Sci 57(8): 146-149.

Copyright Info: © 2014, Animesh Jha, et al., licensee AIMS Press. This is an open access article distributed under the terms of the Creative Commons Attribution Licese (http://creativecommons.org/licenses/by/4.0)

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